Chest Pain while swallowing

Patient: Im 18 weeks pregnant with my first child and have been experiencing acidity for the past 2-3 weeks now. I have been burping constantly and although i do not have any ‘acid-reflux’ back into my throat, i do feel a slight chest pain when i swallow food. I can feel the lump of food moving slowly down my throat and then experience pain in the middle of my chest as the food is moving further down. I feel very uncomfortable and have a heaviness in the chest at that time. Please advise.

Symptoms: N/A

Doctor: